Four-horse equalizer



J. ROBSON.

FOUR HORSE EQUAUZER.

APPLICATION FILED MAY20.1921.

. 12423,@8@ Patented July 25, 1922.

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Application iledlllay 20, 1921. Y Serial No. 471,039.

T 0 all whom t may concern.'

Be it known that I, JOHNy RoBsoN, a citizen of the United States, and a resident of Anita, in the ycounty of 'Cass and State of Iowa, yhave invented a new and useful lmprevement in Four-Horse Equalizers, of which the following is a full, clear,and eX- act description.

kMy invention relates to draft-equalizing devices for agricultural implements, and it consists in the' combinations, constructions, and arrangements herein described and claimed.

An object of my invention is to provide a draft-equalizing` device or evener for four draft animals, whereby suilicient space-is at alltimes afforded for free movement of each draft animal `without interfering; with the movements of the remaining` draft animals.

A further object' of my invention isto `provide a device that is adapted for application to an agriculturalv implement, such asa gang or sullry plow, whereby draft animals may be hitched to the implement in close juxtaposition thereto and the vstress on thek draft animals thus reduced 'to a minimum.

p A further object of invention is to` provide a device of the character described that is adapted to be attached to an agricultural implement, such as a plow, to occasion a substantially even stress on all the animals hitched thereto when the implement is being` turned at an angle to the direction neviouslv traversed as yfor instance when turning a corner.

A. lirther object of my inventionis to rprovide a device of the character described that can bequicltlyrand easily applied to various agricultural implements, such as ggaug' and sulky plows,v harvesting machines, etc., without any change being; required in the usual construction of the implement.

v@ther objects and advantages will appear in the following; specification, and the novel features of the invention willbe particularly` pointed out in the appended claims.

My invention is illustrated in the accompanying drawings. forming` part of this application, in w'hichy Y Figure 1 isaplan view, showing` the device applied vto an implement tongue,

f Figure 2 is a section along the line 2 2 of Figure 1, and y Figure 8 is a section along the line 3-3 of Figure 1.

In carrying out my invention, l provide a ltension 2 thereto.

lprojected through vthe lugs of a clevis 6 and 4the eyelet 4 to secure the clevis to the draft har. A reenforcing and supporting strap 7 is secured at one end .to the extension 2 and superposed on the laterally turned end portion thereof, `beingbent downwardly yaround the eyelet 4, as at 8. The downwardly turned portion 8 contacts the adjacent wall ofthe clevis 6 and maintains the draft bar and the parts carried thereby :in substantially the same horizontal plane as an 1m-` plement tongue 9 .to which the draft bar is attached. v rlhe clevisf issecured to a clevis- .engaging portion 10 ,of the tongue 9 by means of a bolt or pin 11er in any suitable manner. Y

A clamping member 12 is disposed onthe tongue '9 ata spaced distance from the other vclevis-engaging member 10 and is Aformed with an eyelet 13 adapted to slidably receive a rod 14. nut 15 is threaded'on the rod 14 at its rearward end to prevent the displacement of the rodl which is formed at its Aother end to provide a hook 16 adapted to en an opening 17 through'the draft bar.

A draft-equalizinp; frame comprises a bar 18 pivoted at 19 to the extension 2 intermediate lthe length of the latter and at a spaced distance from one end of thebar 18. A bar 20 that has awlength approximately twice `that' of the bar 18 is disposed substantially .parallel with the latter and is connected therewith. by connectors 21 and 22. IThe connector 22 is pivoted at 23 tothe bar '18 and at 24 to the bar 2O approximately midway between the ends of the latter. rlhe connector 21 is Apivoted at 25 to the bar 2O atene end of the latter and is provided with a guide slot 26 adapted to receive apin 27 projected through 'the corresponding end of the bar 18. Anut 28 threaded on the pin 27, which may be a bolt, prevents displacementfof thebar 21 with respect to the bar 18 while permitting slidablelmovement vof `the ini-n2? along the guideslot26.

The bolt 24 that secures the connectors 22 to the bar 2() also pivotallyconnects a clip 29 with the latter. The clip 29 slidably engages the body portion 1 of the draft bar.

i retaining member 30 is secured by a bolt 3l or the lilre to the body portion l of the draftbar and is turned dovvnivardly to prevent the withdrawal of the body portion l through the guiding and retaining clip 29.

From the foregoing description of the various parts of the device, the operation thereof may be readily understood. A double-tree 32 is secured by a link or clevis 3? to the bar E20 at one end of the latter, A similar double-tree le is secured by a link 35 to the bar 52,0 at its other end. A pair of Whittle-trees are secured to the double-tree 34 at opposite ends of the latter and in any suitable manner, as by means of links El?. Si second pair of whiftle-trees 38-38 are secured to the double-tree 32 at opposite ends thereof as at 39. A draft animal may be hitched to each of the ivhiiile-trees in the usual manner to accomplish the drawing of the implement of which the tongue 9 is a part. `Obviously, the draft animals hitched to the double-tree Sli Will be balanced against the draft animals hitched to the `double-tree 32. The draft animals are thus so disposed that eachone has space for free movement Without impeding the progress of an adjacent draft animal, Wherefore each draft animal pulls directly in the line of progress and a maximum of Work may be performed with a minimum of strain on the draftanimals. The device is particularly adapted for application to plovvs and maybe used to decided advantage, since the implement to which attached may be turned at a right angle to the direction previously traversed, as in turning` acorner, and during the turning movement, the draft Will be distributed equally among all the draft animals. ln turning the corner, the equalizing frame assumes the position indicated by the dotted lines in Figure l# llfhe bar 2O slidably moves along the body portion l of the draft bar.

The pin 27 is slidable in the guide slot of the connector 2l. IThe rod la is slidable through the eyelet 13 of the clamping member 12 which is rigidly attached to the tongue 9. Consequently, the stress occasioned by the drawing of an implement, of which the tongue 9 is a part, is distributed equally among the four draft animals. The device is simple in constructionand operation and thoroughly effective for the pur-` pose intended. lt can be readily applied to an agricultural implement of an ordinary construction and is designed particularly for use with or sullry plorvs. y

l claim: A i y l. A device of the character described comprising a draft bar having a straight body portion adapted to be adjustably conifiaaesa nected at one end With a vertical tongue, and an integral lateral extension adapted for connection With the outer end of the ver- `tical tongue, a slide slidably mounted on on said draw bar as said draft equalizer is pivoted as in turning the vehicle.

2. A device of the character described comprising a draft bar consisting of a straight body portion having an integral lateral extension, also turned laterally adjacent to its end and adapted for connection with an implement tongue, a draft-equalizing frame pivotally connected vvith the draft bar, and adapted for connection with harness-engaging members, a clamping member adapted to be secured to the implement tongue and provided with an eyelet, a rod pivoted at one end tothe body portion of the draft bar and arranged to slide in the eyelet, and means for preventing the disengagement of the eyelet by the rod.

3. A. device of the character described vcomprising a draft bar having a straight ing the framein its movement about its pivot, and means carried by the body portion for limit-ing the movement of the frame relative to thebody portion.

4t. A device of the character described. comprising a draft bar having a straight body portion adapted to be adjustably con-- nected at one endivith avehicle tongue and an integral lateral extension adapted for.` connection at its outer end with the vehicle tongue, a draft-equalizing frame comprising an equalizing bar pivoted adjacent to one end thereof to the said extension, an equalizing bar of greater, length adapted for connection with harness-engaging means, a connector pivoted `at one end to the first named equalizing bar and at its other end to the second named equalizing bar, and a second connector pivoted at one end to the second named equalizin'g bar adjacent to an end of the latter and having an automatically/adjustable connection at' its other end with the first named equalizing bar. JOHN ROBSON, 

